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AuthenticationSchemes Enumeration

Specifies protocols for authentication.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

Namespace:  System.Net
Assembly:  System (in System.dll)

[FlagsAttribute]
public enum class AuthenticationSchemes

Member nameDescription
NoneNo authentication is allowed. A client requesting an HttpListener object with this flag set will always receive a 403 Forbidden status. Use this flag when a resource should never be served to a client.
DigestSpecifies digest authentication.

For additional information, see RFC2617 – HTTP Authentication: Basic and Digest Authentication. This document is available at http://www.rfc-editor.org

NegotiateNegotiates with the client to determine the authentication scheme. If both client and server support Kerberos, it is used; otherwise, NTLM is used.
NtlmSpecifies NTLM authentication.
BasicSpecifies basic authentication.

For additional information, see RFC2617 – HTTP Authentication: Basic and Digest Authentication. This document is available at http://www.rfc-editor.org.

AnonymousSpecifies anonymous authentication.
IntegratedWindowsAuthenticationSpecifies Windows authentication.

This enumeration is used to specify the method used to authenticate client requests being processed by HttpListener objects.

Note   Basic authentication requires the exchange of a password and should therefore be avoided except in the case of secure, encrypted connections.

The following code example demonstrates using the Negotiate enumeration value to specify that clients are authenticated using the Negotiate security protocol.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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